This all depends, I find when I'm traveling I shoot way more possibly ~40 exp. roll or more a day. But when I'm bored here in Madison during the summer I try and do at least 2 rolls (~40 exp.) a week, or more if I've got an idea in my head.

Probably thirty rolls a year but as per Steve above skewed heavily towards the summer months. Sadly with the rocketing cost of shooting transparencies, I can see that figure falling rather than rising.
Steve

I probably shoot about 50 rolls a year, that includes 120 film I would think it's about 30 rolls of 135 and 20 of 120. Iv'e shot a lot more since I retired 8 years ago because I now go out shooting almost every day.

Probably around 50-60 rolls a year, but over half of those could be done within a 1-3 week period while travelling. I rarely shoot outside of holiday time (I've got 5 months a year), since work and life in general are pretty draining otherwise.

I'm with E. von Hoegh too. I carry my camera walking almost every day. The other day I used 6 frames and that was very unusual. Usually 1 or 2 and often none. It usually takes me several weeks to finish a roll. Which is good because it takes me that long to make all the prints too! Sort of a nice balance there.